Combustion-engine oil-purifier



1. GOOD.

COMBUSHON ENGINE OIL PURSHER.

APPUCAHON FILED us. 15, 1911. 1,369,803.

RENEWED MAY 3!- SQHL Patented 1, 1921.

Z O .r. Q U n uurreo s'rA'res JOHN GOOD, 0F BROOKLYN, NEW YORK COMBUSTION-ENGINE OIL-PURIFIEB.

Specification of Letter: Patent:

Patented Mar. 1, 1921.

Application filed February 15, 1917, Serial No. 148,867. Renewed Kay 81, 1818. flcrlal No. 237,623.

To Iii/whom it may concern:

lie it known that 1, JOHN GOOD, 9. United States citizen, residing in Brooklyn, New York, have invented the following described Improvements in Combustion-Engine Oil- Purifiers.

The invention is directed to improvements in the means of eliminating the contamination of the lubricating oil in internal combustion engines, which has occurred therein from admixture with theliquid fuel escaping past the pistons into the engine crank case, and the invention consists in means for bringing the contaminated in initiating oil into intimate contact with a current of air or other gaseous medium,

preferably in the presence of heat, for the purpose of evaporating off the fuel liquid therein which is more volatile than'the lubricating oil. The invention also consists in the utilization of the exhaust gas heat of the engine, either directly or indirectly as a source of heat to facilitate the evaporation and also in the returning of the so evaporated fuel back to the combustion space of the engine and in other features which will be made apparent to those skilled in this art from the following description.

In the accompanying drawingsz' Figure 1 represents in vertical section a preferred form of this invention with the appurtenant engine parts shown more or less in diagram;

Fig. 2 is a side elevation partly in section of the vaporizing chamber; and

Fig. 3 is a section of a modified form (R evaporating chamber.

The engine shown in Fig. 1 may be assumed to be any ordinary internal combustion engine supplied with charge mixture of liquid fuel and air, in suitable pro 'iortions, from a charge-forming device 1, to which the liruid fuel-is supplied by a pipe 2. Such :uel may be assumed to be any fuel such as heavy gasolene, kerosene, or the like, which wl'icnhnixed with and retained in the lubricating oil impairs its lubricating qualb tics and is therefore dangerous to the engine bearings. l'hc air component of the charge mixture enters from the atmosphere through the box or stove 3 which surrounds the ensuflicicntly for the purposes of this invention. The degree of heat so applied may be greater or less according to the volatility (if the engine fuel and other conditions and ginc exhaust pipe 4 and is thereby heatcd' may be suppl1ed 8oleIy-b the exhaust gas or y other and-indepen ent means. From the stove 3 the air, heated or otherwise, passes through an evaporating chamber 5 to the intake side of the charge-forming de-. vice. In the latter it is mixed with the fuel and the charge mixture passes thence through the manifold pipe 6 to'the inlet valves wh1ch do not a pear in the drawing. T he evaporating chain er 5, which thus constitutes part of the suction intake of the englue, 18 a wide, shallow chamber with a curved or sloping floor which is provided with protuberances 7 to increase its superficlal floor area. Lubricating oil from the engine orank case-is delivered at the top of the evaporating chamber, through c pipe 11, so as to spread out and flow downward over the floor, in distended and substantially film form, finding an outlet from the cham-, her through the filter 8 connected to its bot-. tom and thence into the return pipe 9 from which it may flow back to the crank case or elsewhere as desired. The oil circulating system includes an engine-driven pump 1", drawing Oll from the oil space in the crank case and delivering it through the pipe 11 to the evaporating chamber but it will be apparent that, depending upon the convenienccs of engine design, the circulation may be established by other means, by iump alone or by pump and gravity. It will also be apparent that the shallow and relatively high velocity air current in contact with the distended oil film in the evaporating chamber will evaporate the relatively volatile fuel therein and carry it oil to the chargeforming deviccnvhile' the oil freed from this contamination will be returned to the lubricating system of the engine. When the engine fuel is fairly volatile the heating means for the air may be omitted as above stated, in which case the evaporation will result in a marked and desirable cooling effect upon the oil, but with heavy fuel and particularly kerosene, a heated gaseous medium is advisable and constitutes an important featureof the invention; the heat imparted to the main body of oil is largely absorbed by the evaporating process, and of course the usual oil cooler, commonly used in combustion engines may also be employed in connection with this invention if desired.

Referring to Fig. 3, the modification there shown consists in forcibly directing some or all of the gaseous evaporative fluid into direct impingin contact with the surface of a bod of the ubricating oil contained in a bow -form chamber 12 and thence conducting it into the passa 13 which leads to the charge-formin device. The gaseous me dium is heate bfirst passing through a stove or heater 1 and the amount directed into contact with the oil in the chamber 12 is controlled b a b -pass valve 15 which can be opened wi e w en it is desired to have the suction intake assa without a 'y restriction to flow. he oi in the cham r 12 forms part of the circulatingsystem above described, being set at a constant level by the relative disposition of the inlet and outlet pipes 11 and 9 thereof.- The dotted-line rep-v resents the surface of the oil under impingement by the air current.

Claims:

1. Means for removing liquid fuel contamination of lubricating Oll. in internal combustion engines, comprising in combinm tion means for circulating the oil through a vaporizin chamber separate from the engine cranfi case and means for directing an evaporatingflow of gaseous medium through said chamber.

Means for removing liquid fuel contamination of lubricating 011 in internal combustion engines, comprising in combination means for circulating the oil through a vaporizin chamber separate from the engme cran case and means for coincidentally transmitting the engine heat to said chamber and dlrectin an evaporative fiow' of gaseous medium t rough the same.

3. Means for removing liquid fuel 'contamination of lubricating 011 in internal combustion engines, comprising means for -aeirculating the oil through avaporizin hamber and passing an evaporative flow 0 air therethrough, in combination with the engine exhaust passage arranged to raise the temperature of-said chamber;

4. Means for removing liquid fuel contaminatio'n of lubricating Oll in internal combustion enginescomprising means for circulating the oil from the crank case through an evaporating chamber separate from the engine crank case and means for directin heated evaporative fluid into conchamber separate from the en 'ne crank case and a passage connected with t' e combustion spaceof the engine and with said chamber a for directing a current of evaporative fluid through the latter and in contact with the liquid therein.

6. Means for removing liquid fuel contamination of lubricating oil in internal combustion engines comprising means for circulating oil from the crank case of the engine over the floor of a shallow vaporizing chamber, said chamber forming part of the suction intake of the en no and adapted also to conduct eva orate fuel back to the combustion s ace 0 the en 'ne.

7. Means or removing iquid fuel contamination of lubricating ml in internal combustion engines comprising means for circulatin oil from the engine crank case over the oor of a shallow vaporizing chamber forming part of the suction intake of the engine and a filter and a return pipe for conducting oil from the said chamber back to the crank case.

8. Means for removing liquid fuel contamination of lubricatin oil in internal combustion en incs compnsin in combination with the c urge forming evice and the air intake of the engine opening thereto, of an evaporating chamber located in said intake between its entrance and the charge forming device, and means for circulating oil from the engine crank case through said chamber.

In testimony whereof, I have signed this specification.

JOHN GOOD. 

